Pith Number

pith:S5OGNEKP

pith:2013:S5OGNEKP7KBUEAHXFUEK3FLO5B

not attested not anchored not stored refs pending

Some reductions of the spectral set conjecture to integers

Chun-kit Lai, Dorin Ervin Dutkay

arxiv:1301.0814 v2 · 2013-01-04 · math.FA

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T03:02:35.483337Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

975c66914ffa834200f72d08ad956ee8642eb17066c30905a66b0075abdaaaec

Aliases

arxiv: 1301.0814 · arxiv_version: 1301.0814v2 · doi: 10.48550/arxiv.1301.0814 · pith_short_12: S5OGNEKP7KBU · pith_short_16: S5OGNEKP7KBUEAHX · pith_short_8: S5OGNEKP

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/S5OGNEKP7KBUEAHXFUEK3FLO5B \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 975c66914ffa834200f72d08ad956ee8642eb17066c30905a66b0075abdaaaec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93f91770c28fdf12614219c42ace3d6e692d2f42429377df64cbb09e14a4648c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2013-01-04T20:05:30Z",
    "title_canon_sha256": "b16ec5be9ef5dc4c05e5efa36ffad90548f8f7f4f7726668f08ff8d29ae1d32f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.0814",
    "kind": "arxiv",
    "version": 2
  }
}